放射性的
- 与 放射性的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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People through nuclear reactions, have been synthesized 17 kinds of atomic number greater than 92 of the transuranic elements, and thousands of The new kinds of radioactive nuclides, and by high-energy and ultra-high energy-ray beam and the interaction of atomic nuclei and found hundreds of kinds of short-lived particles, namely, baryon, meson, lepton, and particle resonance states of these particles has led to a new field of study - the birth of particle physics since the age of .70, nuclear physics has entered a deep development and wide application of new, more mature stage, on the one hand the development of particle acceleration and detection techniques, expanding people's research in nuclear means, the other hand, nuclear technology to serve the national economy, for example, for the development and utilization of nuclear energy to provide more accurate nuclear data; the use of isotope tracer technique diagnosis and treatment of disease; the use of radiation and irradiation preservation of food, irradiation breeding .
人们通过核反应,已经人工合成了17种原子序数大于92的超铀元素和上千种新的放射性核素,并且通过高能和超高能射线束和原子核的相互作用,发现了上百种短寿命粒子、即重子、介子、轻子和共振态粒子,对这些粒子的研究导致了一门新学科——粒子物理学的诞生。70年代以来,核物理进入了纵深发展和广泛应用的新的更成熟的阶段,一方面发展粒子的加速技术和探测技术,扩充人们研究原子核的手段,另一方面将核技术服务于国民经济中,例如,为核能的开发利用提供更为准确的核数据;利用同位素示踪技术诊断和治疗疾病;利用射线及辐照技术保存食品、辐照育种等。
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Environment radon is mainly from rock and soil in geological environment, but the research is not connected with geological environment now. On the basis of physical field, the theoretical distribution model of radon in soil and exchange model of earth—air are set up by using Fick diffusion law and Dacy law, and then the research of environment radon is linked with geological environment. This paper described how the evry parameter of the theoretical model influence the radon concentration in air. The results of research indicat that molecule diffusion of radon is different from it's eddy form. Under the condition of surface radon source, the model experiment is used to study the transportation and distribution of radon in medium. The data of experiment show the relationship between radon and depth can be described by exponent. If the radioelement is well—distributtion, the concentration of radon in different depth or in different point at the same depth change with time, but the accumulated exhalation amount of radon at different point on the surface of model are close in relative long time. The author studied the exchange of radon between mediums and verified the theoretical models too.
环境氡主要来自岩石、土壤,而目前环境氡研究中与地质环境结合很少,为此作者以物理场为基础,运用气体运移的费克扩散定律和达西定律,建立起壤中氡浓度分布与大地—大气间氡交换理论模型,首次在理论上将环境氡与地质环境结合起来;论文中从理论上讨论了模型中各参数对空气中氡浓度的影响,发现空气中氡运移的分子扩散方式和湍流扩散方式存在明显差异;通过面状氡源条件下的氡运移模型实验,研究了介质中氡的运移与分布,实验数据表明氡浓度随深度的变化规律可用指数函数描述,在放射性元素分布均匀的条件下,介质中不同深度和同一深度不同点的氡浓度随时间而变,但介质表面不同点在较长时间内向空气中累计释放的氡的量是相近的;同时研究了不同介质间氡的交换,并验证了所建立的理论模型;运用理论模型预测青岛市城区壤中氡浓度、江西临川一住宅区空气中氡浓度及江西二个测区的区域空气中氡浓度分布,取得了较好的效果。
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Results showed that shoot biomass of H. annuus was significantly higher than that of R. acetosa and R. hastatus; among three plant species, 134Cs specific activity in shoots was the highest in H. annuus after 50 d-treatment, however after 70 d-treatment, that in R. acetosa was the highest. Bioaccumulation ratio reached 1.5, 1.4 and 1.3 in R. acetosa, R. hastatus and H. annuus after 70 d-treatment, and the former two plants kept with trend of continuously increasing. Three plants were resistant to 134Cs contaminated soil and capable of translocating 134Cs from soil to plants. Among them, H. annuus removed greatest 134Cs amount in the aboveground part during the experiment period, and R. acetosa, R.
结果表明,向日葵地上部生物量显著高于酸模和戟叶酸模;处理50d时,向日葵地上部134Cs比活度在3种植物中达到最高,而在处理70d时,酸模地上部134Cs的比活度达到最高;处理70d时,酸模、戟叶酸模和向日葵对134Cs的富集系数均大于1,分别达到1.5、1.4和1.3,且前2种植物继续保持快速上升的趋势。3种植物对铯污染土壤具有一定的忍耐性,并具有较强的从土壤向植物转移铯的能力;在本实验期内(70d)向日葵对土壤中放射性铯的剔除能力最强,而酸模和戟叶酸模则具有更强的铯转移能力。
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There has been a great deal of speculation over the zerg choice to occupy Char, given its harsh environment and total lack of any organic life forms to exploit. Theorists are evenly split among the ideas that Char forms a useful jump-off point to the core worlds of terran and protoss space, that its inhospitable nature makes it easier for the zerg to defend it, or that Char\'s high radiation levels promote an increased rate of mutation in zerg organisms to enable forced evolution of specialist strains.
在虫族占据 Char 期间有大量的投机活动,鉴于有害的环境和缺乏有机生命形势的利用,理论家们用均匀分裂的方法在 Char 形成了一个可用的进入人类世界和神族空间的跳跃点, Char 荒凉的自然性质更利于虫族的防守,甚至 Char 的高度放射性等级促进了虫族机体组织的变异使其演变出特殊的种类。
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EXCLUSIONS 4 In no case shall this insurance cover 4.1 loss damage or expense attributable to wilful misconduct of the Assured 4.2 ordinary leakage, ordinary loss in weight or volume, or ordinary wear and tear of the subject-matter insured 4.3 loss damage or expense caused by insufficiency or unsuitability of packing or preparation of the subject-matter insured (for the purpose of this clause 4.3 "packing" shall be deemed to include stowage in a container or liftvan but only when such stowage is carried out prior to attachment of this insurance or by the Assured or their servants) 4.4 loss damage or expense caused by inherent vice or nature of the subject-matter insured 4.5 loss damage or expense proximately caused by delay, even though the delay be caused by a risk insured against (except expenses payable under Clause 2 above) 4.6 loss damage or expense arising from insolvency or financial default of the owners managers charterers or operators of the vessel 4.7 deliberate damage to or deliberate destruction of the subject-matter insured or any part thereof by the wrongful act of any person or persons 4.8 loss damage or expense arising from the use of any weapon of war employing atomic or nuclear fission and/or fusion or other like reaction or radioactive force or matter.
EXCLUSIONS 4在任何情况下都不得这个保险 4.1损失损害或费用的原因故意的不当行为的保证 4.2普通渗漏,普通的损失重量或体积,或普通磨损的标的物投保 4.3损坏或丢失所造成的费用不足或不适合的包装或准备受保标的物(目的是这一条款4.3 &包装&应视为包括存放在容器或liftvan但只有当这些堆放进行之前扣押保险或担保或其雇员) 4.4损坏或丢失所造成的牺牲固有的副总裁或性质的标的物投保 4.5损坏或损失近牺牲所造成的延误,即使是延迟所造成的风险保险(除费用缴付根据第2段) 4.6损失损害或费用所产生的破产或财务预设的业主管理人员承租人或经营者的船只 4.7故意损坏或蓄意破坏受保标的物或其任何部分的不法行为,任何人 4.8损失损害或费用的使用中出现的任何战争武器的使用原子或核裂变和/或融合或其他类似反应或放射性武力或事项。
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Diamonds began growth when "Jiangnan continent" combined to Yangtze craton, the growth and residence average temperature T〓 was about 1200℃; Diamonds were mutil-stages growth and interruption caused by temperature and pressure varied during Yangtze craton activities; Diamonds were etched when the magma did not erupt on the surface and form failed magma in mantle; during the later growth term T〓<1050℃, the type ⅠaA diamonds formed unclear and growth; Before the host magma erupted T〓<0.5Ma, T〓A<850℃, the type Ⅰb diamond formed unclear and growth; Few diamonds were brittle deformation during growth term, some were plastic deformation after growth; when the host magma erupted on the surface and weathered to alluvial deposit, diamonds surfaces formed green spots caused by irradiation, then most of green spots became to brown spots during a mid-temperature metamorphism; modern river reform it to alluvial deposit in the minute valley again.
在扬子地台&江南古陆&克拉通化时,金刚石开始生长,其生长与保存的平均温度T〓在1200℃左右;期间由于地台的活动,生长的温度压力条件发生了多次变化,使金刚石出现多次生长、停顿;夭折的母岩上侵活动使金刚石受到熔蚀作用;在金刚石形成的晚期,T〓值下降到1050℃以下,出现了另一次金刚石的生长期,在临近金刚石母岩上侵时T〓<0.5Ma,温度进一步降到850℃以下,使Ⅰb型金刚石得以保存;在金刚石形成期间还有过碎性变形发生;金刚石形成后部分样品经过了塑性变形;金刚石在上侵过程中,遭受了强烈的熔蚀;在母岩露出地表,形成沉积砂矿时,受到了放射性物质的辐照,先形成表层的绿色斑点、壳层,后经过中低温的热变质作用,大部分绿色转化为褐色;现代河流作用对沉积砂矿进一步改造,形成现在的细谷型砂矿。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?